Low human chorionic gonadotropin may have some effect on the growth and development of the fetus. After pregnancy, the levels of human chorionic gonadotropin and progesterone in the pregnant woman’s body increase significantly, which is conducive to maintaining the growth and development of the fetus. If the levels of human chorionic gonadotropin and progesterone decrease significantly and fail to maintain the development of the fetus, the growth and development of the fetus may be seriously affected, and may even cause fetal death in the womb. In early pregnancy, the human chorionic gonadotropin in the pregnant woman’s body continues to increase, and may show the performance of doubling every other day. After reaching the peak value, it may remain at a stable high value. The growth and development of the embryo will be judged according to the results of the human chorionic gonadotropin, progesterone and ultrasound.